STUDYING THE BEHAVIOR OF THE PILE CAP FOR SHEAR REINFORCEMENT WHICH IS SIMULATED AS A CONTINUOUS DEEP BEAM USING SELF COMPACTING CONCRETE

Abstract

This paper is focused on the effect of shear reinforcement on the structural behavior of continuous reinforced concrete deep beams to employ the results on the pile's caps works. An experimental study using self-compacting concrete with constant compressive strength nominally equals 60 MPa was frequently used with three groups of shear span-to-depth ratios of 0.95, 1.08, and 1.25 to produce twelve continuous beams. Each group of shear span-to-depth ratios has one unreinforced beam against shear stresses and three shears reinforced beams; the first is consists of horizontal stirrups only, the second has vertical stirrups only, and the third from combined with horizontal and vertical stirrups to act together against shear stresses. The results revealed that the configuration of the combined shear reinforcement (horizontal and vertical) is an effective factor in the behavior of the deep beam and when it is increased in one category the ultimate strength and the serviceability of the specimen can be improved. The percentage of the obtained improvement for a specimen can be increased by decreasing its shear span-to-depth ratio.